STEROL COMPOSITION OF THE VINE POWDERY MILDEW FUNGUS, UNCINULA NECATOR - COMPARISON OF TRIADIMENOL-SENSITIVE AND RESISTANT STRAINS

被引：31

作者：

DEBIEU, D ^{[1
]}

CORIOCOSTET, MF ^{[1
]}

STEVA, H ^{[1
]}

MALOSSE, C ^{[1
]}

LEROUX, P ^{[1
]}

机构：

[1] INRA,URI AQUITAINE,F-33883 VILLENAVE DORNON,FRANCE

来源：

PHYTOCHEMISTRY | 1995年 / 39卷 / 02期

关键词：

UNCINULA NECATOR; VINE POWDERY MILDEW; VITIS VINIFERA; FUNGICIDE RESISTANCE; FUNGUS; ERGOSTA-5,24(24(1))-DIENOL; 14-ALPHA-METHYLSTEROLS; STEROL C-14 DEMETHYLASE; DELTA(5)-STEROLS; TRIADIMENOL;

D O I：

10.1016/0031-9422(95)00015-Y

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Ergosta-5,24(24(1))-dien-3 beta-ol was the major sterol of conidia of Uncinula necator, an obligate pathogenic fungus, which is the causal agent of vine powdery mildew. Other Delta(5)-sterols, such as cholesterol, ergost-5-en-3 beta-ol, stigmasta-5,22-dien-3 beta-ol and stigmast-5-en-3 beta-ol found in U. necator host plant (Vitis vinifera) were detected as minor sterols in conidia of U. necator. The triadimenol-sensitive and resistant strains contained similar sterol compositions. Triadimenol treatment led to accumulation of 14 alpha-methylsterols, such as eburicol and obtusifoliol. This suggests that sterol C-14 demethylase is the target for triadimenol in sterol biosynthesis in U. necator.

引用

页码：293 / 300

页数：8

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